For example, leading loco has no engine sound in both parts of scenario ldp-46 (cane creek dirty train) , 2 trailing units have engine sound. Very often there is no sound of the trailing loco at the end of train (dpu) units in sandpatch and horsehoe scenarios and cajon pass. Generally there is lack of sound of loco engine on either end of the train. UPDATE: I checked and it seems that any single engine in the pdu mu train is silent, no matter if in lead or trail position, double or triple locos are sound (appears in most us freight dlc) Breaks immersion quite a lot of
